what is "pu" in electrical engg.

4 Answers  

---

what are the disadvantages of low power factor

0 Answers   HMK,

---

what type of protection used below 132KV feeders

11 Answers   APTransco, Telecommunications, wbsedcl,

---

in 33/11kv stepdown transfomer, transformer will stepdown to 11kv & remaining 22kv where it will go..

3 Answers  

---

what is the function and use of cable differential protection relay?

0 Answers  

---

what is meant by PU value ? anyone can you explain briefly to me ?

3 Answers  

---

Tell me in detail about c.t. And p.t. ?

0 Answers  

---

This is reqd for a 1MW Solar power plant..We have 2DC outputs from the solar panels Connected to 2INVERTOR panels.. Output from invertor is 3ph,280v,500kva,50hz.These are connected to individual ACB.This has to be stepped up to 11KV ,1250KVA SYSTEM.Now can I use (1) one more ACBTO GIVE A COMBINED OUTPUT OF 1000KVA,280V & STEP UP THE OUTPUT BY USING a single two winding 3 ph transformer 11kv/1250kva. or (2)use the two outputs and connect to one three winding transformer of above rating..Pls suggestwith details.

0 Answers  

---

What the purpose of transient fault recoredr in substation

2 Answers   NCC,

---

at meter room 50 hrc switch installed,but there are not get earthing proper,so what happen?and 11kv transformer out put going in to hrc main 400a three nog each? so earthing is require for all switch? (some customer made earthing at there home.)

0 Answers   Ebrahim Textile, Siemens,

---

what is diff b/w electrical & electronics ?

6 Answers   Bhel, UltraTech,

---

What is relation b/w Transmission Lines & Communication Lines ?

2 Answers  

---